Question

4x^2 -1 = 0

cac ban giai giup minh voi nha

 

Answer 1

4x²-1=0

4x²=1

x²=1/4

=>x=1/2 hoặc x=-1/2

Answer 2

4x^2-1=0 =>4x^2=1 =>x^2=4 => x^2=2^2 hoac -2^2 =>x=2hoac -2

Answer 3

\(4x^2-1=0\)

\(\Rightarrow4x^2=1\)

\(\Rightarrow x^2=\frac{1}{4}\)

\(\Rightarrow x=\frac{1}{2}\) HOẶC \(x=-\frac{1}{2}\)

Answer 4

4x²-1=0

\(\Rightarrow4x^2=0+1\)

\(\Rightarrow4x^2=1\)

\(\Rightarrow x^2=\frac{1}{4}\)

\(\Rightarrow\orbr{\begin{cases}x=\frac{1}{2}\\x=\frac{-1}{2}\end{cases}}\)

Answer 5

4x² - 1 = 0

=> 4x² = 0 + 1

=> 4x² = 1

x² = 1 : 4

x² = 1/4

=> x = 1/2 hoặc -1/2